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A Plc-based Manual Pitch Control System

A control system and manual technology, applied to the control of wind turbines, engines, wind turbines, etc., can solve the problems of high labor intensity and low pitch change efficiency, and achieve the goals of reducing labor intensity, simple and convenient control, and improving pitch change efficiency Effect

Active Publication Date: 2018-05-04
DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of low pitch efficiency and high labor intensity of using the manual pitch control box for pitch change, the present invention provides a PLC-based manual pitch control system, through which the control system does not need The maintenance personnel put the manual pitch control box on the hub on the top of the fan tower, which improves the pitch efficiency and reduces the labor intensity of the maintenance personnel

Method used

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  • A Plc-based Manual Pitch Control System
  • A Plc-based Manual Pitch Control System
  • A Plc-based Manual Pitch Control System

Examples

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Effect test

Embodiment 1

[0038]A kind of manual pitch control system based on PLC, it is characterized in that: comprise power supply module, PLC controller main knob switch and at least one pitch unit, each pitch unit all comprises hardware part and software part; Each pitch unit The hardware part includes 1 servo driver, 1 auxiliary knob switch, 3 push button switches, 1 limit switch, 1 indicator light and 1 limit switch indicator light. The power module can convert AC power into DC power , one end of the knob switch and the button switch is connected to the power module, the other end of the knob switch and the button switch is connected to the PLC controller, the indicator light is connected to the PLC controller, and the PLC controller and the servo drive The limit switch is connected to the power module, and the limit indicator light is connected to the limit switch; the software part of each pitch unit includes a manual pitch module, a manual pitch module, and a manual pitch module. , a blade a...

Embodiment 2

[0092] A kind of manual pitch control system based on PLC, it is characterized in that: comprise power supply module, PLC controller main knob switch and at least one pitch unit, each pitch unit all comprises hardware part and software part; Each pitch unit The hardware part includes 1 servo driver, 1 auxiliary knob switch, 3 push button switches, 1 limit switch, 1 indicator light and 1 limit switch indicator light. The power module can convert AC power into DC power , one end of the knob switch and the button switch is connected to the power module, the other end of the knob switch and the button switch is connected to the PLC controller, the indicator light is connected to the PLC controller, and the PLC controller and the servo drive The limit switch is connected to the power module, and the limit indicator light is connected to the limit switch; the software part of each pitch unit includes a manual pitch module, a manual pitch module, and a manual pitch module. , a blade ...

Embodiment 3

[0152] A kind of manual pitch control system based on PLC, it is characterized in that: comprise power supply module, PLC controller main knob switch and at least one pitch unit, each pitch unit all comprises hardware part and software part; Each pitch unit The hardware part includes 1 servo driver, 1 auxiliary knob switch, 3 push button switches, 1 limit switch, 1 indicator light and 1 limit switch indicator light. The power module can convert AC power into DC power , one end of the knob switch and the button switch is connected to the power module, the other end of the knob switch and the button switch is connected to the PLC controller, the indicator light is connected to the PLC controller, and the PLC controller and the servo drive The limit switch is connected to the power module, and the limit indicator light is connected to the limit switch; the software part of each pitch unit includes a manual pitch module, a manual pitch module, and a manual pitch module. , a blade ...

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PUM

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Abstract

The invention discloses a manual pitch change control system based on a PLC. The system comprises a power supply module, the PLC, a main knob switch and at least one pitch change unit, wherein each pitch change unit comprises a hardware part and a software part; the hardware part of each pitch change unit comprises a servo driver, a secondary knob switch, three button switches, a limiting switch, an indicator light and a limiting switch indicator light; and the software part of each pitch change unit comprises a manual pitch change module, a manual pitch opening module, a manual pitch collecting module, a blade angle zero calibration module, a blade angle 0-degree position indication module and a blade angle 92-degree position indication module. The system can realize functions of blade opening, blade collection, zero calibration and blade angle 92-degree position indication, is simple and convenient to control, and is high in maintenance efficiency.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a system for controlling the blade pitch of a wind power generator. Background technique [0002] In the field of wind power generation technology, the pitch of wind turbine blades is a very important technical requirement, and manual pitch control is an indispensable link in the maintenance of large megawatt wind turbine pitch systems. [0003] The authorized announcement number is CN202031775U, and the authorized announcement date is November 9, 2011. The Chinese utility model patent discloses a megawatt-level wind turbine pitch control device, which solves the existing technology that affects the operating life and safety of the unit. Operation and other issues, including engine room controller and pitch control system, the technical points are: in the pitch control system, the pitch master control cabinet including the pitch controller and independen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 项勤建
Owner DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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